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"We have been and are having altogether too many accidents in the tunnel, too many cases of the bends, too many deaths, too many delays to the work. Well er I er Mr. Kennedy has something to say about them, I believe." No sound was heard save the vibration of the air-compressors and an occasional shout of a workman at the shaft leading down to the air-locks.
The massive doors of the air-locks opened, and while the full crew of picked men hurried aboard with their personal equipment, Samms talked earnestly to the two scientists in the control room. " ... and about half the fleet is still in the air. They aren't attacking; they are just trying to keep her from doing much more damage until you can get there. How about your take-off?
They were ushered into the Venerian room, where they talked briefly with their wounded fellow before they dressed him in a space-suit, which they filled with air to their own pressure. Then all three were lifted lightly into the air, and without a word or a sign were borne through the air-locks of the vessel, and into an opening in the wall of the rescuing heptagon.
"We have been and are having altogether too many accidents in the tunnel, too many cases of the bends, too many deaths, too many delays to the work. Well er I er Mr. Kennedy has something to say about them, I believe." No sound was heard save the vibration of the air-compressors and an occasional shout of a workman at the shaft leading down to the air-locks.
As that monstrous form in its weirdly bulging envelope was guided through the air-locks into the Sirius, Crowninshield barked orders into his transmitter and the police reformed.
It was desirable to carry the tunnel excavation eastward from the shaft in normal air far enough to permit of building at least 50 ft. of tunnel and installing air-locks, so that compressed air might be available when the rock surface was broken through.
"Himmel, und he iss himself killing!" moaned von Steiffel. "One more chance that might work," and Brandon stepped over to the communicator, demanding that Verna Pickering be brought at once. She came in as soon as the air-locks would permit, and the physicist welcomed her eagerly. "This fellow's fighting so he's tearing himself to pieces.
For a moment they were in such darkness that even the beam from the tractor seemed alien. Then another door started to open before them and a widening shaft of light was there to greet them. Odin was thinking that each race must have some craft at which it excels all others. If so, then the building of air-locks was certainly the Brons' highest art.
The artificial planet of metal was now close enough so that it was visible to the ultra-vision of the Secret Service men, so plainly visible that the warships of the pirates were seen issuing from the enormous air-locks.
A noteworthy instance of the use of pneumatic appliances in cylinder sinking for foundations is that in progress at the Forth Bridge. The wrought-iron cylinders are 70 feet in diameter at the cutting-edge, and have a taper of about 1 in 46. Shafts with air-locks and pipes for admitting water and ejecting silt are provided.
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